DE102008009843A1 - cutter - Google Patents

Abstract

The invention relates to a cutting device (10) for trimming a projecting peripheral portion (6) of at least one flexible layer (5) in a multi-layer structure (1), comprising the flexible layer (5) and at least two plates (2, 3, 4) in that the flexible layer (5) is arranged over the edges (7) of the plates (2, 3, 4) with an overhang (6) to be trimmed at least in regions, with a cutting device (20) having a cutting edge (21) in that the cutting device (20) is movable relative to the multi-layer structure (1) along at least a part of its circumference for cutting the projection (6), the cutting device (20) being movable in a direction (23) which has a component of movement perpendicular to the surface (42 ) of the multi-layer structure (1), is oscillatingly movable.

Description

The The invention relates to a cutting device for trimming a protruding one Peripheral portion of at least one flexible layer in a multi-layer structure comprising the flexible layer and at least two plates the continuous flexible layer with an at least partially, to be circumcised supernatant over the edges the plates is arranged with a cutting device which has a Cutting edge, wherein the cutting device relative to Multi-layer structure along the circumference or along at least one Part of the circumference is movable, for cutting the supernatant. Such cutting devices are known in the art, the present invention being particularly, but not exclusively, aimed at applications in the glass industry, for cutting flexible intermediate layers in multilayer structures made of glass, wherein as far as the following description on such multi-layer structures Refers, this should not be limited. In principle, other multi-layer structures, having as an intermediate layer, a flexible layer or film, Find use.

Especially in multilayer glass plates, it is known one or more Layers of flexible synthetic material, especially in shape of films between two glass plates, the flexible Layer constructed between the glass plates of one or more individual layers can be. In addition, it is also possible that a plurality of plates are used, wherein between each two adjacent Plates are always arranged one or more flexible layers. Such multilayer structures are intended to be included according to the invention be.

These flexible layers are cut to size, at the outside of the Protrude plates and then by removing that Section of the flexible material that extends over the plates extends, be circumcised or by pruning the flexible layer on a defined supernatant before the plates in the case of multi-layer structures a connection process be subjected, in which such glass panes with the in between lying films z. B. connected to composite safety glass.

in the It is known in the art to use cutting blades or knives use, based on the lateral surfaces of the glass plates be manually advanced. This, however, is a high personnel costs connected as the cutting blades or knives by the staff and beyond is the work depending on the intermediate layer powerful, so that fatigue may occur. The production rate is thereby reduced.

When Further prior art cutting heads are in use, which have a motorized rotary disk. Although solve These cutting heads solve the problem with manual cutting connected is. The intermediate layer, made of the flexible material, however, it tends to unpredictably stretch when pruned and shrink. Through this indefinable way the Deformation during cutting can cause ripples and other irregularities arise, so that a defined residual supernatant of the trimmed intermediate layer to the edge of the glass is no longer present.

These problems are now trying in the prior art DE 698 05 680 T2 in that the cutting forces are at least partially intercepted by providing stop means which are arranged so that they bring about a counterforce to the force exerted by the rotating disk at the point to be cut. However, these measures are not sufficient, especially with thicker intermediate layers and larger feed rates.

It Now object of the invention is a cutting device for trimming a protruding peripheral portion of at least one to provide a flexible layer of a multi-layer construction, which it allows a wider range of Interlayer materials to process and the processing speed to increase.

These Task is solved by a cutting device with the generic features, wherein the cutting device in a Direction, oscillating back and forth is movable, with the direction of movement the oscillating motion a component of motion perpendicular to the Surface of multi-layer construction has.

D. H. it finds an oscillating, so reciprocating motion the cutter takes place in a direction that is either vertical given to the surface of the multi-layer structure, or under an angle greater than 0 but less than 180 ° thereto, d. H. has a component of motion transverse to the surface, whereby the occurring cutting forces are better at the Support plates and undefined deformations be reduced.

The oscillating motion reduces the load on the flexible material in the direction of advance by counteracting a cutting motion of the cutter on the material a pushing movement on the material dominates.

Especially It is preferred that the cutting device with a positioning for Positioning the cutting device relative to the multi-layer structure and in particular to the at least two plates of the multi-layer construction interacts. By positioning the cutting device relative to the plates, in particular to the glass edge, if it is to be a glass plate, to be positioned. For this purpose, the positioning have a sensing device for engaging the plate or plates. This is especially in situation or shape inaccuracies or a curved course of the multilayer structure advantageous.

The Cutting device can have a knife or a blade.

To a particularly preferred embodiment may be provided be that the direction in which the cutting device is oscillatory is movable, at an angle α (inclination) of 45 ° to 90 ° to the surface of the multi-layer structure, the inclination both with and against the direction of movement between cutting device and multi-layer structure (transport or Cutting direction) can be provided. Ie. it can be provided be that the end pointing toward the multilayer construction, that is, the installation position in the downward facing end of the cutting device, the clamped end in the installation position z. B. above the multilayer structure is intended to run ahead or that this end is the above trailing the clamped end. An inclination transverse to the cutting direction is usually not provided.

The Cutting device can in a guide device be held, wherein the guide means the cutting device twist-secured, but z. B. in the direction of the oscillating motion slidably or elastically held, may result. To this Way, the oscillating motion can be easily realized.

there can be provided that a drive for the oscillating Movement is provided, which the cutting device over electrical, pneumatic or mechanical impulses in the oscillating Movement offset.

The Cutting edge of the cutting device can be parallel to the oscillating Moving direction or at an angle to go. So can the cutting device, for example, perpendicular to the surface of the multilayer structure are oscillated, by a chamfer However, the cutting edge can then at an angle β to oscillating motion. By the deviation of the angle from 0, the cut can be shaped in the style of a bat. This Angle is preferably between 0 to 20 ° and more preferably between 0 and 10 ° and in particular between 0 and 5 ° to Direction of the oscillating motion.

Of Furthermore, it can be advantageously provided that a fixing device is provided in the area of the cutting device during cutting the layers of the multilayer construction towards loaded perpendicular to the surface of the multilayer structure. It can be provided that a corresponding fixing device has at least one pinch roller, which has a force perpendicular to Surface of the multilayer structure on the multilayer structure exercises, with the support of the multilayer structure on the opposite side either by a support table z. B. a conveyor on which the multilayer structure is stored, can be done or optionally can additionally or alternatively at least one counter-roll may be provided which provides the counterforce. This limits the area in which deform the flexible intermediate layer between the plates can and the cut quality can be improved.

there can the roles, namely the Andruck- and / or the counter-roles, be designed steerable and especially in Direction perpendicular to the surface of the multilayer structure be moved to the pressure with which the rollers against the multilayer structure to adjust, and this engaged with the multilayer structure bring to. For this purpose, it can be provided that at least the pressure rollers are movable in the direction perpendicular to the surface. In Usually this will be the at least one role that the support table opposite. The rollers can be springy or pneumatically but otherwise in the direction of the load be biased.

Particularly advantageously, it can be provided that the guide device is coupled to the fixing device, so that steering of the guide device including the fixing device can take place with steerable rollers, with inaccuracies and the course of the edge of the multilayer structure to be machined being felt by the positioning or sensing device can then be passed on to the leadership institution. In this way, the lateral pressing force, with which the cutting device abuts against the multilayer structure, can be kept low, since an immediate adjustment of the movement of the cutting device can take place on the course of the edge of the multilayer structure. Due to this reduction of the necessary pressure force on the multilayer structure can also bear smaller and lighter discs be processed because they are not pushed away. Due to the steerable rollers, a curved glass run can be followed well.

to Achieving a relative movement between the multilayer structure and the cutting device can be provided that in a known manner either the cutting device and / or the multilayer structure is moved, wherein a movement of the multilayer structure over a conveyor, in particular a roller or Belt conveyor, can be done on the the multilayer structure is up. Alternatively, both the cutting device as well as the multilayer structure to achieve a relative movement be moved to each other.

The Guide means of the cutter is therefore either fixed or movable.

Further Advantages and features of the invention will become apparent from the others Application documents. The invention will be described below with reference to a drawing explained in more detail. Showing:

1 a cross section through a multi-layer structure;

2 a schematic plan view of an overall arrangement;

3 an enlarged cross section of 2 in the area of the cutting device;

4 a side view;

5 a side view in a varied arrangement;

6 another arrangement in a side view;

7 an arrangement according to 6 in cross-section;

8th and 9 further embodiments in side views;

10 an overall system with a cutting device according to the invention;

11 and 12 advantageous embodiments of the cutting device.

1 shows a section of a cross section through a multilayer structure, wherein the invention is shown here with reference to a glass multilayer plate, as used for example for the production of laminated safety glass. The multilayer structure, in its entirety by the reference numeral 1 is provided, consists of a first plate or disc 2 , which is formed by a glass sheet, as well as a second glass pane 3 , which serves as upper cover plate, whereas the glass pane 2 serves as a lower base plate for the multi-layer structure. In between, there is another glass plate as a middle pane 4 provided, where alternatively also several center discs 4 between the discs 2 and 3 can be arranged, but usually no center discs are used. The disks 2 . 3 and 4 are each from each other by flexible intermediate layers 5 separated, which are plastic films. The flexible intermediate layers 5 are of such size that they are in a border area a supernatant 6 have that over the edge 7 passing through the edges of the discs 2 . 3 and 4 is formed, stand out.

2 now shows a schematic plan view. The multi-layer construction 1 is here on a support table 8th put off, by the multi-layer construction 1 can be seen through. In addition, a cutting device 10 provided by means of which the supernatant, over the edge 7 the plates 2 . 3 and 4 protrudes, cut in a cutting process or cut to a defined length.

The cutting device 10 is about a fastening device 9 set in a conventional manner fixed or movable.

For trimming the protruding peripheral portion 6 (Overhang) along the edge 7 the cutter moves 10 relative to the multilayer structure 1 along the edge 7 , The relative movement can be achieved by the movement of the cutting device 10 or the practice of multi-layer construction 1 on the support table 8th or by a combination of both movements.

3 shows a cross section in the region of the cutting device 10 , As a multi-layer construction 1 Here is just a structure of two discs 2 and 3 as well as a layer 5 made of a flexible material. Across from 1 is the middle class eliminated. The multi-layer construction 1 is on a support table 8th stored, wherein the cutting device 10 a cutting device 20 includes, which is designed here as a knife, with a cutting edge 21 , in the 4 and 5 is shown.

In addition, the cutting device includes 10 a sensing device 11 for touching one or more of the plates 2 to 4 of the multi-layer construction 1 , This is the sensing device 11 with a storage, the part of the fastening device 9 is connected to the cutting device 20 against the multi-layer structure 1 presses, in which case the storage 12 with a pressing device 13 the fastening device 9 cooperates and form a positioning. The pressing device 13 is here via the sensing device 11 controlled, the cutting device 20 in the direction of the double arrow 14 to the multi-layer structure 1 can be pressed to the contour of the multi-layer structure 1 to follow. The pressing device 13 is shown pneumatically in the figure, but can also be electrically, by spring action or by another method, the cutting device 20 by means of the sensing device 11 in terms of the edge 7 of the multi-layer construction 1 position.

The sensing device 11 may consist of one or more rollers, sliding plates or other elements, in a known manner one or more individual plates of the multilayer structure 1 near the cutting device 20 touch them.

The cutting device comprises a knife 20 with a cutting edge 21 that in a leadership 22 twist-proof in the direction of a double arrow 23 performs an oscillating motion. The oscillating movement in the direction of the arrow 23 is about a drive 24 generated in an electrical, pneumatic or other manner.

4 now shows a side view of a similar design 3 , where here two sensing devices 11 are provided, wherein the sensing device 11 ' the disc 3 scans and the sensing device 11 '' the disc 2 , between which is the flexible intermediate layer 5 located.

In the 4 and 5 is the fastening device 9 with the pressing device 13 and storage 12 not shown. The fastening device 9 however, can do it accordingly 3 be educated.

The cutting device 10 corresponds to the in 3 Shown here being the cutting edge 21 parallel to the direction of movement, with the double arrow 23 is designated, is formed. The direction of movement of the oscillating movement in this case also runs at 90 ° angle, ie perpendicular to the surface or surface of the multi-layer structure 1 , wherein the area with the reference numeral 42 is designated.

5 now shows an analog structure, in which case the cutting device 10 at an angle α to the surface 42 of the multi-layer construction 1 is arranged inclined, wherein the angle α is between 0 ° and 180 °, so that here is a component of the oscillating movement movement transverse to the surface 42 given is.

In addition, the cutting edge runs 21 in 4 parallel to the direction of movement 23 whereas the cutting edge 21 in 5 at an angle β to the direction of movement, through the double arrow 23 is designated, can be arranged. The feed direction in which the cutting device 10 along the edge 7 is moved, is here by the reference numeral 25 characterized. The angle β is in this case preferably between 0 ° and 20 °.

6 shows an embodiment in which the cutting device as in 4 is arranged.

In addition to the sensing device 13 here is a fixation device 44 provided the middle flexible layer 5 between the discs 2 and 3 fixed in which they are the slices 2 and 3 in the direction perpendicular to the surface 42 the discs 2 and 3 burdened each other. The fixing device 44 includes two roles 30 and 32 , where the roller (pinch roller) 30 by means of a spring or alternatively by means of a pneumatic cylinder or in another known manner in the direction of the arrow 46 towards the cover disk 3 is loaded and against the cover disk 3 and thus against the base disk 2 suppressed. The support of the base disk 2 can do this over the support table 8th be provided or by means of another role 32 , which is called counter-roll. By the fixing device 44 the area is restricted in which the flexible intermediate layer 5 can deform between the plates during the cutting process and in this way the cutting quality is further improved.

7 shows a corresponding arrangement in cross section, in turn, the pressing device 13 and storage 12 are shown.

The feather 31 is in the direction of the multilayer structure 1 preloaded and has such a suspension that even multi-layer structures 1 from more than the two plates shown, but multi-layer structures 1 the intermediate plates 4 include, the cutting device 10 can be fed by the role 30 by squeezing the spring 31 in the direction opposite to the arrow 46 dodging.

The counter-roll 32 is contrary to perpendicular to the plates 2 . 3 positionally fixed, but is common with the cutter 20 about the device 13 together with the cutting device 20 along the direction 14 moved and optionally, if the cutting device 10 is movable, together with the cutting device 10 method. Basically, the roles can 30 . 32 also independent of the cutting device 10 be provided.

The 8th and 9 show now Ausgestal tions in which the cutting device 10 is unchanged, but the fixing was modified in each case.

So shows 8th a design with steerable pinch rollers, in turn, the pinch roller 30 over a spring 31 in the direction 46 is resiliently loaded and by upsetting the spring 31 against the direction 46 from the multilayer construction 1 can be lifted. In addition, the pinch rollers 30 . 32 by means of bearings 41 and 42 around a vertical axis 43 , where both pinch rollers 30 and 32 around the same axis 43 are rotatable, are turned. In position or shape inaccuracies of the disc edge 7 that of the sensing device 11 is felt, the cutting device can 20 through the steerable pressure rollers 30 and 32 even with low lateral pressure always on the edge of the disc 7 to adjust. Due to this reduction in the pressing force and smaller and thus lighter discs are not pushed away when the intermediate layer 5 is pruned before the slices 2 . 3 then laminated to a composite.

9 now shows a design in which the upper pinch roller 30 can be disengaged, the rollers 30 and 32 as steerable rollers, as in 8th shown, are formed. About a non-rotating linear bearing 50 can the pinch roller 30 through the actuator 51 , the Z. B. may be formed as a pneumatic cylinder, in the arrow direction 46 or contrary to the direction of the arrow 46 be moved and thus from the cover plate 3 be lifted off. By this design, the placement of the pressure roller 30 on the multi-layer construction 1 improves and thus the risk of shifting the individual layers 2 . 3 . 4 and 5 further minimized against each other. In addition, the wear of the pressure roller is also 30 reduced.

In 10 an example of an overall system is shown, which is suitable all four side edges 7 a rectangular multi-layer construction 1 to crop. The multi-layer construction 1 is on a conveyor line 60 has been placed, which may be formed in a conventional manner, as shown, as a roller conveyor or as a belt conveyor. The multi-layer construction 1 runs in the direction of the arrow 61 through the plant.

The multi-layer structures 1 are usually introduced into the system so that the front edge in the representation 62 of the multi-layer construction 1 always in the same position The supernatant 6 in the area of this edge 62 can then by a stationary cutter 64 , that of the cutting device described above 10 corresponds to be cropped. The cutting devices described below correspond in their essential structure of the cutting device 10 the previous figures.

For trimming the opposite edge 63 serves a cutting device according to the invention 65 , due to the different size of the multi-layer structures 1 the location of this edge 63 can vary. The cutting device 65 can therefore by means of a linear guide 66 and a drive, not shown, in the direction of the double arrow 67 be moved and thus to the different widths of the multi-layer structure 1 be adjusted. The linear guide 66 is doing a substructure 68 appropriate.

On further passing through the multilayer plate in the direction of the arrow 61 through the plant reaches the trailing edge 70 of the multi-layer construction 1 the further cutting device according to the invention 71 , This is also by means of a linear guide 72 on a substructure 73 attached and by means of a drive, not shown, in the direction of the arrow 74 along the linear guide 73 traversable. The cutting device 71 is opposite to the cutting devices 64 and 65 rotated 90 ° so that the cutting direction in the direction of the arrow 74 runs.

After the conveyor line 60 the trailing edge 70 of the multi-layer construction 1 is suitably positioned, by means of the cutting head 66 the trailing edge 70 circumcised.

Similarly, the cutting head 65 with the linear guide 76 attached to a substructure 77 is attached, the leading edge 71 of the multi-layer construction 1 circumcised.

The 11 and 12 show advantageous embodiments of the cutting device 10 , these being around a vertical axis 80 is arranged pivotably, including the cutting device 10 a rotatable axle 81 comprises, at which the guide device 22 the cutting device 10 is fixed. The axis of rotation is on a linear guide 82 attached to a substructure 83 is fixed, mounted and in this way can with the same cutting device 10 both in the transverse direction along the arrow 84 in 11 as well as after a corresponding rotation in the longitudinal direction (arrow 85 in 12 ). Opposite an arrangement in 10 can thus cutters 10 be saved.

In addition, a corresponding device, as reflected in 11 and 12 shows the advantage, even sloping edges 7 as well as edges 7 with a curved course with regard to the flexible intermediate layer 5 to crop.

Overall, such a cutting device 10 can be provided, which has a high flexibility in terms of trimmable multi-layer structures and a high cutting accuracy at a high processing speed.

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 69805680 T2 [0006]

Claims (13)

Cutting device ( 10 ) for trimming a projecting peripheral portion ( 6 ) at least one flexible layer ( 5 ) in a multilayer structure ( 1 ) comprising the flexible layer ( 5 ) and at least two plates ( 2 . 3 . 4 ) on which the flexible layer ( 5 ) with an at least partial, to be trimmed supernatant ( 6 ) over the edges ( 7 ) of the plates ( 2 . 3 . 4 ) is arranged with a cutting device ( 20 ), which has a cutting edge ( 21 ), wherein the cutting device ( 20 ) relative to the multilayer structure ( 1 ) is movable along at least part of its circumference for cutting the supernatant ( 6 ), characterized in that the cutting device ( 20 ) in one direction ( 23 ), which has a component of motion perpendicular to the surface ( 42 ) of the multilayer structure ( 1 ), is oscillatingly movable. Cutting device according to claim 1, characterized in that it comprises a positioning device ( 11 . 12 . 13 ) and a cutting device ( 20 ) with the positioning device ( 11 . 12 . 13 ) for positioning relative to the multilayer structure ( 1 ) and in particular to at least one plate ( 2 . 3 . 4 ) of the multilayer structure ( 1 ) cooperates. Cutting device according to claim 1 or 2, characterized in that the cutting device ( 20 ) is a knife or a blade. Cutting device according to one of the preceding claims, characterized in that the direction ( 33 ), in which the cutting device ( 20 ) oscillatingly movable at an angle α (inclination) of 45 ° to 135 ° to the surface ( 42 ) of the multilayer structure ( 1 ), ie the inclination to the surface ( 42 ) both with and against a direction of movement ( 25 ) between cutting device ( 20 ) and multilayer structure ( 1 ) is provided. Cutting device according to one of the preceding claims, characterized in that the cutting device ( 20 ) at or in a management facility ( 22 ) is held. Cutting device according to claim 5, characterized in that the cutting device ( 20 ) in or at the management facility ( 22 ) is guided against rotation. Cutting device according to claim 5 or 6, characterized in that the cutting device ( 20 ) in the direction of the oscillating movement ( 23 ) in the management facility ( 22 ) is slidably or elastically guided. Cutting device according to one of the preceding claims, characterized in that the cutting device ( 20 ) by an electric, pneumatic or mechanical drive ( 24 ) is placed in the oscillating motion. Cutting device according to one of the preceding claims, characterized in that the cutting edge ( 21 ) runs parallel or at an angle β to the direction of the oscillating movement, wherein β in particular between 0 and 20 °, in particular 0 ° to 10 ° and in particular 0 to 5 °. Cutting device according to one of the preceding claims, characterized in that it has a fixing device ( 44 ) located in the area of the cutting device ( 20 ) the layers ( 2 . 3 . 4 . 5 ) of the multilayer structure ( 1 ) in the direction ( 46 ) perpendicular to the surface ( 42 ) of the multilayer structure ( 1 ), in particular resiliently or pneumatically loaded. Cutting device according to claim 10, characterized in that the fixing device ( 44 ) at least one pressure roller ( 30 ) and in particular a counter-role ( 32 ), wherein one or both roles ( 30 . 32 ) preferably about an axis ( 46 ) perpendicular to the surface ( 42 ) of the multilayer structure ( 1 ) are rotatable. Cutting device according to claim 11, characterized in that one or both rollers ( 30 . 32 ) in one direction ( 46 ) perpendicular to the surface ( 42 ) of the multilayer structure ( 1 ) are movable. Cutting device according to one of the preceding claims, characterized in that at least the cutting device ( 20 ) around a plane perpendicular to the surface ( 42 ) of the multilayer structure ( 1 ) extending axis ( 80 ) is pivotable.